Installation of gas boilers Baxi: connection diagram and instructions for setting

In the list of advantages of Baksi gas heating equipment, the leading positions are occupied by flawless operation, reliability and an extremely high level of operating comfort. Boilers of this brand are deservedly recognized by the world and domestic consumers. Practical wall models are in the most active demand.

The responsible manufacturer warns: the installation of Baxi gas boilers must be carried out by representatives of gas supply companies. However, information about the specifics and stages of work is needed by all owners of units. It will not hurt to get acquainted with them to control the work of hired performers and further exploitation. Do you agree?

We will tell you how the gas-processing heat generators from Baxi S.p. are installed. A. The article presented by us contains technological nuances and customization features. Here you will find recommendations from experienced gas workers, following which will save you from disruptions in work and dangerous situations.

Specificity of equipping gas equipment from Baxi

In the range of trade offers offered to the buyer from Baxi S.p. A. there are floor and wall units. The first ones are purchased for the device of autonomous heating in spacious country houses, industrial or commercial facilities. The latter are popular with owners of apartments, small summer cottages and small private houses.

Both wall and floor models of this brand are produced with one or two heat exchangers. Each heat exchanger is designed to heat the medium of a separate circuit. Single-circuit boilers are designed for the preparation of the heat carrier, double-circuit boilers serve the heating system and provide hot water to the mixers.

The assortment of boilers from Baksi includes atmospheric and turbine units. Atmospheric models are equipped with an open combustion chamber, turbine ones - a closed one. The former are somewhat cheaper and easier to operate, the latter are more expensive and more complicated, but much safer, and therefore more popular among consumers.

Operation control and protection devices

Gas boilers demanded on the market are equipped with the following systems for regulating the operation of the heat generator and ensuring safety:

• Safety thermostat. A device with a sensor that reacts to excess water heating. If it fixes the temperature above the set limit, the boiler is blocked. Disabling it is prohibited.
• Traction sensor. A device that records the temperature of gas processing products discharged from the boiler. If they are above 90 ° C, the electronic board shuts off the gas supply. It should not be disabled under any circumstances.
• Flame ionization sensor. An electrode that monitors the gas supply to the burner, detecting a violation in the supply of blue fuel or partial attenuation of the burner. In case of detection of dangerous situations, the system blocks the boiler.
• Medium flow pressure switch. A system that allows the burner to be activated only if the pressure of the processed medium exceeds 0.5 bar.
• Frost protection. A device that automatically starts the boiler when the temperature drops to + 5 ° C and makes it work until the coolant for delivery to the supply pipe heats up to + 30 ° C.

Protection against the formation of ice plugs in a system filled with coolant or sanitary water is not turned off even when all other electrically dependent systems of the unit are disconnected from the power supply. The two-pole disconnect device allows it to remain in working order if the boiler is not used for some time.

In addition, the boilers are equipped with systems that ensure the post-circulation of the heated medium. Those. after stopping the burner coolant another three minutes will run on the heating circuit. There is a function that makes the circulation pump turn on periodically for 10 minutes if the boiler is not used for more than a day, and many more useful innovations.

To read the ambient temperature background, the units are equipped with room and outdoor sensors. With the help of the thermostats to which they are connected, the owners of the treated premises choose the minimum and maximum temperature limits. In accordance with these data, the automation will start and stop heating the coolant.

Specialized systems of Baksi aggregates

An excellent option, implemented technologically and constructively, is the ability to adjust the gas valve of boilers from Baxi. Using the screw on the device, you can adjust the power, focusing on the CO content₂ in the flue gas duct.

To accurately calibrate the gas valve, the equipment manufacturer attaches a table to the product in the technical documentation. It indicates the parameters of the unit operation with the minimum and maximum power, as well as with the corresponding fan speed. The adjuster simply needs to turn the screws until the desired value appears on the display.

The functionality also includes an extremely useful function - self-cleaning of chimney ducts. It is produced when the device is operating at full power. Spontaneous removal of combustion products allows less frequent cleaning of the chimney. In addition, it guarantees the stability of the system and the safety of users.

The function of degassing is provided - to remove air from the system, which inevitably occurs when the heating circuit is filled with water. They use it before the first start, as well as after stopping the boiler and draining the water for a warm period, when there is no need for heat supply.

In addition to a good set of functions, the ability to connect solar panels, realized in almost all models of this brand. The boiler still included in the heating scheme can be supplemented remote boiler, for which nozzles are provided, and an additional pump.

Installation subtleties and customization nuances

We have already noted that by installing, connecting, first starting up and setting the operating parameters of the Baksi gas boiler, work as a foreman from an organization with which an agreement was concluded for the supply of blue fuel and for the maintenance of gas processing aggregates. After applying your own efforts to carry out the listed steps, you lose the opportunity to use the warranty.

All steps of the installation cycle of work are documented. Boiler owners are given papers indicating who installed and connected what and what. If a malfunction is found, the contractor will be involved in its elimination. When a factory defect is detected, which happens extremely rarely, all problems for replacement and repair are solved by the gas service.

Note that these gas heat generators can be installed in heating circuits with any heating devices. Are not an exception and warm floor, but for their operation, the boiler power should be set to 65 ° C at the inlet to the supply pipe. They are suitable for both one- and two-pipe heating circuits, for tee and beam versions.

Steps for connecting the boiler to communications

Let us list in stages what gas workers should do during the installation and connection of a boiler for Baksi gas.

Conventionally, the entire cycle of work can be divided into three main parts, these are:

• Preparation of building structures and communications. Strengthening structures as needed. Laying of lines for connection, if necessary.
• Hanging the boiler on the wall and connecting to communications. Purely mechanical work, requiring strict adherence to the scheme and recommendations of the manufacturer of the unit.
• Performing the first start-up and setting the operating parameters. The first launch is the responsibility of the representatives of the gas company. The user can set the settings himself.

All actions are carried out in a thoroughly thought out and clearly worked out order by the boiler manufacturer.

The preparatory period includes:

• Inspection of the premises to confirm the possibility of installing gas equipment.
• Drawing up a contract for the production of work with the attachment of a gas boiler connection diagram with the Baksi logo and an accurately calculated estimate. It should indicate the prices of work and the cost of materials purchased by the company for the installation of a thermal energy generator.
• Cleaning the used heating and hot water system from mineral deposits and contaminants deposited on the walls of pipelines and devices during operation. Produced by any available chemical.
• Laying communications to the boiler installation site. Only heating and gas supply lines are supplied to single-circuit ones, heating, gas and water supply lines to double-circuit ones.
• Installation of shut-off valves on each communication line. They are needed to turn off the unit in case of repair, accident, replacement.
• Installation of a mud filter on the return pipe of the heating system. It is required to collect mineral sediment that may have remained after cleaning and will form when the water is heated.
• Separate power supply line. It is used so that no other electrical equipment is connected in parallel with the device, which creates the threat of a short circuit with fire hazardous consequences.

Connection of communication systems is made with the obligatory use of seals. All work must be carried out in accordance with sanitary standards.

The optimal location of the electrical outlet relative to the gas boiler is 30-50 cm from the body. Its installation and laying of the power supply branch is carried out in accordance with the PUE. In addition, equipment is required be sure to groundusing a three-core cable with a grounding conductor.

The list of measures for installing the boiler includes:

• Fixing the boiler. It is produced on a wall with sufficient load-bearing capacity for this. The unit is fixed with anchor bolts, if necessary, the wall is closed with a non-combustible finish, if it is made of combustible materials.
• Connecting pipelines to the boiler. It is carried out in accordance with the scheme attached by the manufacturer to the data sheet.
• Chimney assembly. The chimneys are connected to Baksi boilers only with fasteners supplied by the manufacturer of the unit.

For turbine models equipped with a closed combustion chamber, either coaxial pipe, or a regular pipe coupled with a pipe for supplying air to a closed burner. The first option is simpler, but more expensive in terms of purchasing a coaxial system. However, it is not a fact that the installation of two ducts for air supply and smoke removal will ultimately cost less.

For atmospheric models with an open combustion chamber, a conventional chimney is connected. Discharge of processed blue fuel products is carried out either through the wall into the street space, or into the collective chimney of an apartment building.

The chimney elbows allow this duct to be led out in any direction through the wall. Note that through the walls they lead out mainly in high-rise buildings, the number of storeys of which does not exceed five levels. In private houses, it is preferable to build vertical smoke channels.

Upon completion of the installation work, they proceed to the implementation of the first launch and configuration.

Start-up and commissioning activities

For the first start-up, the gas boiler and the circuits processed by it are filled with the medium transported through them. Unlike most wall-mounted models, which can only heat water as a coolant, Baksi units can be filled with antifreeze - an aqueous solution of propylene glycol with anti-freeze additives.

Process filling with coolant boiler and heating circuit is made through the branch pipe located at the bottom of the unit. After filling, air is vented, then, if necessary, the volume of the coolant is replenished in the same way.

The implementation of commissioning activities is preceded by the following actions:

• Checking the pressure in the system. It should correspond to the recommended values ​​of 1-1.5 bar.
• Connecting the boiler to the power supply.
• Gas supply to the combustion chamber, for which you need to open the yellow valve at the gas pipe inlet in front of the boiler.

It happens that when the unit is turned on for the first time, it is blocked due to the presence of air pockets in the pipes. In the case of Baksi boilers, you do not need to manually bleed the plugs, the system will remove them by itself. You just need to press the start button again and hold it for 2 seconds until the burner is activated.

Operating parameters are set using an electronic panel located on the front side of the boiler. To select the heating operation mode, there is a button with a stylized battery, for DHW - a button with a tap.

They adjust the operation of the Baxi gas boiler in accordance with a single algorithm:

• Select the button responsible for heating or preparing sanitary water.
• Operate with the +/- buttons to set the appropriate mode.
• Press the Power button so that the electronic control memorizes the set parameter.

If the performance task procedure is successful, the display shows “MEM”. This means that the boiler will operate according to these settings until the user decides to make changes.

Unwillingness to memorize the newly selected parameter must be confirmed by pressing the "i" button. The system, which has accepted the refusal of changes, will inform about it by an inscription on the display "ESC".

In order to select and set the characteristics of the boiler operation, hold down the buttons for 6 seconds. To display the current information about the operation of the unit, press the "i" button for 5 seconds. If the "INFO" function is activated, the display shows "A00", instead of which the temperature at the outlet of the boiler of the heated heat carrier appears.

Then you need to check the dynamic value of the gas pressure at the inlet to the gas burner. When the main fuel is consumed, it should be 20 mbar. When using a propane-dominated balloon mixture, the dynamic pressure should be 37 mbar. Measurements are carried out by connecting a pressure gauge to the gas valve fitting.

Next, the maximum and minimum pressure values ​​are adjusted using the regulator. In this case, again, a gas valve is used, to the fitting of which a sensitive pressure gauge is connected, which records changes in mbar. The values ​​are selected according to the data given in the table by the manufacturer. They depend on the model and on the type of gas to be processed by the boiler.

The gas heaters of the coolant and hot water offered to the consumer from Baksi are initially set up for processing main gas. If the boiler is to "work" in an autonomous system with a group of cylinders or a gas holder, then the nozzles are replaced before performing all of the above settings. And then the voltage on the modulator is changed with the choice of parameter F02.

Tips for Reducing Operating Costs

If all operating settings have been made in accordance with the table data provided by the manufacturer, then the equipment will use energy very economically, generating the necessary heat in the right owners volume.

To do this, you should:

• For systems with radiators or thermosyphons, select the temperature of the coolant at the outlet of the boiler + 60 ° C. It is worth increasing it only if, during the operation of the unit, comfortable heat in the room has not been obtained.
• Adjust the temperature conditions in accordance with the manufacturer's instructions and the purpose of the room. For heating bedrooms and other rarely visited rooms, the heating temperature can be set below average.
• Do not exceed the temperature background recommended by the manufacturers of the heating devices included in the circuit.
• Use an indoor and outdoor temperature sensor that detects an increase / decrease in temperature. The associated thermostat will independently start / stop the boiler as needed.
• Adjust the temperature of the heating medium by the clock using a timer. At night, for example, it can be lowered by 3-5 ºС.

It should be remembered that by increasing the temperature in the treated room by only 1º, we immediately increase costs by approximately 6%.

In order not to constantly change the temperature settings of the coolant in the autumn-spring difficult period, it is better to put a street temperature sensor. If you do not come across a suitable model or there is no money to buy the original, you can build such a homemade device:

In the event of a prolonged absence, it is better to disconnect the boiler from the power supply, but at the same time, the frost protection system should not be turned off. It is turned off only for the summer period, during which the heating function is abandoned, completely turning off the single-circuit model and transferring the double-circuit version to the supply of hot water.

In order to save on heating, you should not close the radiators with screens and heavy curtains. They will disrupt normal air circulation and force the boiler to operate at full capacity for no apparent reason.

Also, the equipment manufacturer advises against performing micro-ventilation in the premises, keeping the transoms constantly ajar. It is better to open the window wide open and ventilate it in one gulp than to artificially underestimate the readings of the room temperature sensor for a long time. It has been tested in practice that it is more economical this way.

When using the water preparation function, it is better to initially select a temperature that is comfortable for use, not counting on mixing hot and cold water in the mixer. Believe me, thanks to this solution, the thermal energy generated by the generator will not be wasted. In addition, limescale will not settle on the inner walls.

Conclusions and useful video on the topic

The stages of installation, connection and adjustment of the Baxi boiler will be clearly demonstrated in the following video:

Information about the installation process of the Baksi wall-mounted boiler and the rules for connecting it is needed to control the invited performers. Unfortunately, not all of them please with a conscientious attitude to work and knowledge of all the nuances. If the owner of the gas-powered unit is concerned about his own safety and the normal operation of the device, the information provided by us will not be superfluous.

Do you want to talk about how you assembled and set up a boiler with the Baksi logo in your house or in the country? Do you have useful information on a topic that will be useful to future owners of the unit? Please leave comments in the block form below, post photos on the topic of the article, ask questions.